The AgentMail alternative with forwarding, scheduled send and no pricing cliff
AgentMail validated inboxes-for-agents (YC S25, $6M seed). ThreadCamp keeps the parts that work and closes the gaps developers hit: a Free -> $19 -> $79 ladder with no $20-to-$200 jump, programmatic forwarding Routes, scheduled send, and human-in-the-loop approvals.
AgentMail vs ThreadCamp
| Point | AgentMail | ThreadCamp |
|---|---|---|
| Pricing tiers | Free, then $20, then a $200 jump - no tier between | Free -> $19 -> $79 with published metered overage |
| Forwarding / Routes | Per-message forward API only; no routing rules | Catch-all + alias Routes with SRS, unlimited domains |
| Scheduled send | No schedule field on the send endpoint | scheduled_at on POST /v1/emails |
| Human approval | None | Per-inbox approve-first policy + approval queue |
| EU residency | Enterprise-only | eu-west-2 by default |
ThreadCamp is the email API for AI agents: inboxes, sending and forwarding with SRS behind one key.
Other alternatives
Questions
What's the main difference vs AgentMail?
ThreadCamp bundles forwarding Routes, scheduled send and human-in-the-loop approvals that AgentMail lacks, and prices Free -> $19 -> $79 rather than jumping $20 to $200. Both offer inbox-as-API, threads, webhooks, custom domains, scoped keys and an MCP server.
Switch in an afternoon.
No credit card. Full API, MCP and webhooks on the free tier.